4 GRASSHOPPERS AND OTHER INJURIOUS INSECTS OF 1911 AND 1912. 



would prove probably only partially effective, and is recommended for 

 an emergency only, in order to gain time. See page 26 for merits of 

 harrowing. 



In 1908 complaints of increasing numbers of native grasshop- 

 pers began to reach us from Ottertail, Norman, Sherburne, 

 Wadena, Anoka and Stearns counties. Clover crops near St. Cloud, 



Fig. 3. Or.isshopper conditions. 1911. Crosses indicate localitie.s from wliicli 



many complaints of grrassliopper injury were received. Compare wii li 



Pie:. 2 and note spread of these insects. 



tially or entirely destroyed. In other localities it was either clover, 

 alfalfa, pasture land or grain which suffered. In 1909 these pests 

 were again troublesome and evidently on the increase. Conditions 

 Clearwater, Sauk Rapids and South Haven were in that year par- 



